Derrick.



W. J. RAWSON.

DERRICK. APPLIUATION FILED NOV. 26,1913. 1,105,455, Patented July 28, 1914.

2 SHEETSSHEBT 1.

an uento'b W. J. RAWSON.

DERRICK.

APPLIGATION TILED NOV. 2a, 1913.

1,1 05,455. Patented July 28, 1914.

2 SHEETSSHBET 2.

Eiwue ntoz flit/f2 azmwz WILLIAM J. RAWSON, OF LEWIS RUNg-PENNSYLVLAN'IA.

DERRICK.

Specification of Letters Patent.

Patented'July ;\1'91-4.

Application'filed November26; 1913; Serial No. 803,281':

To all whom it may concern:

Be it known that I, (VILLIAM J RAwsoN, a citizen of the United States, residing at Lewis Run, in the county of McKean and State of Pennsylvania, have invented new and useful Improvements in Derricks, of which the following is a specification.

This invention relates to im rovements in oil well and like derricks, and particularly to derricks of the knock-down type, commonly constructed of metal piping, the object of the invention being to provide a derrick, the tower of which may be constructed practically completely of piping, and which may be readily and conveniently transported, set up and taken down.

A further object of the invention is to provide a knock-down derrick structure which is simple, cheap and inexpensive, and which possesses maximum strength and durability.

The invention consists of the features of construction, combination and arrangement of parts herein fully described and claimed, reference being had to the accompanying drawings in which Figure 1 is a front elevation of a knockdown derrick constructed in accordance with my invention. Fig. 2 is a side elevation of the same. Fig. 3' is a horizontal transverse section through the derrick on line 3-3 of Fig. 1. Fig. 4 is a front elevation on an enlarged scale of a portion of one of the uprights and the cross pieces and braces associted therewith. Fig. 5 is a vertical section on line5-5 of Fig. 4;- Figs. 6 and 7 are horizontal transverse sections on the lines (3-6 and 7-7 of Fig. 4.

Referring to the drawing, 1 designates the base frame of the derrick, which is of the transportable type, and 2 designates the tower of the derrick, which is constructed of piping, and which is preferably of"frusto-- pyramidal form. The tower 2 comprises a desired number of corner uprights 3 united by front and rear cross pieces 4 and braces 5 and 6, and similar side cross pieces 4 and braces 5 and 6, constructed and arranged as hereinafter fully described. Each up right 3 consists of a plurality of sections 7, 7 detachably coupled together, the proxi- 'mate ends of adjoining sections being'internally threaded, as at 8, to receive a reinforcing and union section 9, which extends equall into the adjacent ends of the sections i 7 and both couples and stays said sections at the joint. The lower end ofthe union section- 9' is fastened into the end of one of the upright sections,asthelower section 7, by a'tlolt or'rivet 10, thusallowing the pipe sections ofeach upright to'be'rea'dly and conveniently coupled'and uncoupled in setting up and taking: down the derrick. The prox mate ends of the sections 7 and?" are provided with collarsll' and1l2which are suitably securedtheretoand arranged in abutting relation, and which operate as strengthening and spacing devices. The uprights of the derrick structure are united'to each other by sets of front and rear cross pieces 4 and associated braces 5 and 6 and similar side cross pieces 4 and associated braces 5 and 6'. As shown, the cross piece 4 is flattened at each end to form a half-clip 13 which abuts against one of the uprights, while the adjacent end of'the upper brace 5 is similarly flattened to provide a cooperating half-clip 14, said clips being united on opposite sides of the upright by bolts 15 and 16, whereby each cross )iece 4 and brace 5 are fastened to an u )rig it in a reliable manner, and yet in such a way as to be easily and conveniently attached and detached.

The brace 6 is arranged in crossed relation to the brace 5 and is flattened asat' 17, at its ends, and perforated forengagcment with the bolts 16, whereby all the aforcsaidpa'rts are united.

The sets of side cross -bars and braces 4',

5' and 6' are arranged in a similar manner to the front and rear cross bars 4 and'br'aces 5 and 6, except that the front and rear sets ,of cross bars and braces are coupled'to'the 'uprlghts below the joints, while the s de sets .of cross bars and braces are coupledto the uprights above the joints, thus tying androinforcing the uprights in a strong and rigid manner; This arrangement also allows-the front and rear cross bars to be secured in position upon each lower upright section 7 to serve as supports for a scaffold board or latform on which the workman may stand in setting up the derrick, allowing the next adjacent upper upright section 7 to be applied and the side cross bars to be placed in position, after which the braces may be coupled up, so that the derrick may be erected in a snnple, convenient and expcditlous manner. Such arrangement also provides for the support of a scaffold board or platform in taking down the derrick section by section, as will be readily understood. The

clamping and fastening members of the parts 4:, 5 and 6' are designated by the same primed reference characters, as 13, 14:, 15 and 16.

It will be observed from the foregoing description, taken connection with the drawing, that each upright 8 is connected with the other uprights of the series by sets of cross pieces and stays of the character described, the sets of connections being arranged above and below the abutting collars 11 and 12 whereby the assembled elements are all united at the joint between adjacent sections of the uprights so as to give maximum strength thereto. Sets of connections of the charaeter'described unite all the sections of the uprights at the joints, whereby a derrick, which is light in weight, and in which the parts are firmly and strongly united, is provided? Such derrick is superior in strength to derricks of ordinary construction, but at the same time may be readily and conveniently transported, set up for use or knocked down for storage or transportation.

' '1. A knock down derrick including up- .and sets of connections coupled to each upright above and below the collars of connecting sections and uniting said upright to adjacent uprights, each set of connections comprising a cross piece extending between like joints of adjacent uprights, a bracing upright extending between connected sections of an upright at one level to the connected sections of an adjacent upright at a higher lever, and bolts uniting the adj oining ends of the cross piece and brace and clamping the same to the first-named upright.

2. A. knock down derrick including uprights, and sets of connections between each pair of uprights, each set of connections comprising a cross piece and a bracing member formed to provide clips disposed on opposite sides of an upright, bolts uniting said clips at opposite sides of the upright, and another bracing member joined to one of said bolts.

8. A knock down derrick including'uprights, each consisting of sections, reinforcing pipes crossing the joints between the abutting ends of adjacent upright sections and secured to one of said sections, collars upon the adjacent ends of upright sections, and sets of connections coupled to each upright above and below the collars of connecting sections and uniting said upright to adjacent uprights, each set of connections comprising a cross piece extending between like joints of adjacent uprights, a bracing upright extendlng between connected sections of an upright at one level to the connected sections of an adjacent upright at a higher level, bolts uniting the adjoining ends of the cross piece and brace and clamping the same to the first-named upright, and a second brace connected with one of said uprights and in like manner clamped with the cross piece to an adjacent upright at the joint oi the next lower level.

4-. A derrick comprising corner uprights formed of coupled sections, front and rear cross pieces, cross braces cooperating therewith, said braces being arranged between the cross bars or adjacent tiers of the derrick and one brace of each set being formed with the cross bars to provide clamping members engaging the uprights, bolts connecting the clamping members and to certain of which the other braces are attached, and corresponding side cross pieces and braces, the front cross bars and cooperating braces being connected with the uprights below the joints and the rear cross bars and cooperating braces being connected with the uprights above the joints.

In testimony whereof I aflix' my signature in presence of two witnesses.

YVILLIAM J. RAWSUN. Witnesses R. @012, H. M. JACK. 

